Associating occurrence data in the context of a composition

A composition is a structure that comprises components from different top lines, in the context of a configured top-level assembly. It is represented by a single line in the structure. It can contain a set of occurrences, absolute occurrences, occurrence group and filtered occurrences (a filtered occurrence references occurrence groups from the item it instantiates). For example, a composition may contain the design view and the process view of the same assembly.

When you view a composition, the revision rule and variant conditions for the referenced window configure the occurrences, if they are linked to a referring window by a corresponding absolute occurrence for the relevant top level. The occurrence groups are configured according to the configuration of absolute occurrences in the top level.

You can associate data to any of the absolute occurrences in the occurrence group, in the context of the composition. You can subsequently view the data associated with absolute occurrences included in occurrence groups in the structure.

If the content (members) of an occurrence group in the composition is changed in another location, your view of the occurrence group is refreshed. Such changes may be made in the source or in another instance of the group that is referenced in a composition.

You can change an occurrence group in the composition (for example, adding or removing members) without having to return to the source view. Any changes you make to the composition are proliferated to all other instances of the occurrence group.